msm: ipa4: update proc_ctx generic command params

Update generic header processing command params to
have tlv length of 2 and  make LSB bits of header
address followed by MSB bits.

Change-Id: If4e53dbb6426c24028c81add1032138ee6e1a37b
Signed-off-by: Amir Levy <alevy@codeaurora.org>